ACL Not Working? How to Fix Failing Rules & Modify Cisco ACLs | CCNA 200-301

Is your Cisco ACL ignoring your rules, blocking your management traffic, or letting everything through? Welcome back to Packet Mentor. Today, we are breaking down why ACLs fail in Global Configuration Mode, how the "Implicit Deny" catches students off guard, and exactly how to modify both numbered and named ACLs without wiping out your entire configuration. If you are prepping for the CCNA 200-301 exam, troubleshooting broken Access Control Lists is a guaranteed test topic. We will log straight into the CLI to fix three broken lab scenarios in real time. Download the Packet Tracer Starter Lab here:https://www.packetmentor.com/labs/ Timestamps: 00:00 ACL configurations in global configuration mode 01:22 Scenario 1: Trapped by the "Implicit Deny All" 04:23 Scenario 2: Extended ACL allowing 443 (HTTPS) and 80 (HTTP) 08:46 The Fix: Sequence Numbers & Named ACL modifications 10:34 Scenario 3: Configurations of Named ACL and why is your ACL allowing ALL traffic? 14:49 Head to packetmentor.com for the complete theory labs! Core Troubleshooting Commands: show access-lists show ip interface [interface-id] clear access-list counters ip access-list extended [NAME] Missed Tuesday's Standard ACL Lab? Watch here:    • Standard ACL Lab — CCNA 200-301 | Cisco Pa...   Missed Wednesday's Extended ACL Lab? Watch here:    • Extended ACL Lab — CCNA 200-301 | Source +...   Join our structured Network & Security Training sessions: https://packetmentor.com #CCNA #CiscoNetworking #AccessControlList #PacketTracer #NetworkSecurity #CCNA200301 #PacketMentor #CiscoCLI #CCIALab #NetworkEngineering